Wool question

[MAK]

I've noted in a bunch of threads that wool is generally considered the best layering material for base and mid layering. I just bought a merino wool full double zip sweater for $35.00 (@ 65% off) that seems to be soft and comfortable. Is there a difference in the type of wool that is preferred for layering? Certainly, the scratchy old wool can't be work against the skin but is there a difference between things like lambs, merino, cashmire, etc...? Should my new purchase go in my bike gear or genaral wear section of the closet? I'm more interested in the weave and type rather than "brand". Thank you.

[Jarery]

Merrino wool is what I use. Its great against the skin.

As to best. Your going to get 500 replies saying wool is best. Its definatly the best material for insulation once it gets wet. Personally I think Polartech Powerdry in silkweight thickness does a much better job at wicking and evaporating.

[Bekologist]

I wear the stuff 24/7 this time of year. there's old wool that's just as soft next to your skin as the new stuff. Just got to check the feel. Merino is naturally softer next to skin.

Some of my favorite wool pieces are 50 years old and cost me five bucks each at a thrift shop.

I've got some thin wool t shirts and wool bike jerseys that actually feel cool in the heat of summer.

[MichaelW]

Wool comes in different grades. The next-to-skin grade is superfine. For midlayer you dont need to go this fine. Some wool experts thing that the quest for ever finer fibres is counter productive and there is more to quality than simply fine fibres.
My own fav for midlayer is alpaca wool which has hollow fibres.
My woolies belong in the general wear section.

You do have to take care when washing wool. Treat it like your own hair, a quick soak with ph-neutral soap or shampoo and a quick rinse with no wringing out or squishing around. Tumle dry is OK for some wool then dry on a flat towel.